The Grand Canyon is Arizona's most famous landmark. Here's everything to know if you're going to visit, plus 10 interesting ...

Lava Falls is considered to be one of the biggest rapids on the Grand Canyon’s Colorado River. Rated a Class 10, this ...

Federal officials have rejected a plan to release floodwaters from Lake Powell to restore Grand Canyon beaches this spring, frustrating river advocates who question the government’s commitment to ...

After months of closures, parts of the Grand Canyon are welcoming visitors again, offering opportunities for hikes and ...

Hike through secret slot canyons, spot endangered California condors, visit sacred Navajo sites, and kayak a stunning 10-mile ...

USGS biologists tag humpback chub to monitor life in a changing Grand Canyon river. Biologist Lindsay Hansen and her USGS team work day and night to study the federally threatened humpback chub in the ...

A new study reveals that the impact of the Meteor crater may have caused a landslide that flooded the Grand Canyon 56,000 years ago.

Controversy has erupted after federal officials at the Bureau of Reclamation announced they do not plan to release floodwaters from Lake Powell this spring to restore the Grand Canyon because of work ...